Help with Logic Digital Clock

[Datz Me]

Is there Digital clock which is not using programmable IC? Can you help me finding this circuit.
I found one but it used LM8560, is there available IC like this and if not is there any replacements?
Thank you all

 

[alec_t]

It would probably be just as cheap to buy a complete digital clock

 

[morse w]

LM8368.... on a google search (LM8560 equivalent)

here's an idea.... how about a shift register (74hc595 is cheap) to count the pulses from a standard anologue clock mechanism and make a 72 led clock (check the 72 led watches on ebay).

i bought 20 of these 8bit counters (they were cheaper than decade counters) to do seconds, mins and hours but havn't made it yet.

another option would be to count into a divider circuit to make one pulse per minute, that would reduce the number of counter IC's needed. (or a reed switch and tiny neo magnet on the seconds arm).

 

[morse w]

or as Alec mentioned..... a sacrifice clock from a bootie or second hand shop.

 

[KeepItSimpleStupid]

The MM53xx series of chips were popular many years ago. You can still find them, but they are expensive. I built a clock using one of these chips back in 1972. It's still running. Inter-digit blanking wasn't implemented. See: http://www.datasheetcatalog.org/datasheets2/53/538743_1.pdf

 

[gmphadte]

ICM 7217, but obsolete, was available as up/down counter(9999) or timer(5959)
Best part was that these had equal and zero output pins. Comes handy for rolling the count at any count u set.

Also had presetting facility.

Gajanan Phadte

 

[colin55]

Here's a clock using gates and counters
View attachment 62958